Saw set



A. JOHNSON June 7, 1927.

SAW sm' Filed June 10, 1926 v ,INVENTOR A7TORNE'Y AXEL JOHNSON,HO'E omnmnioa tmonmal rSAW .sE

. gpplicatijone filed June, 10, i326. ssje rialvljoll iisilsag LThe, presentlinvention; relates to: saw-sets ,or, the han'debperatedj swagei type,

-,Qne,ofiheiobijectsaof the invention is: to 71 .provicle a simple, .inexpenslve, and .easlly ioperated. saw set .x'vhicli. ean .be-u'se'di successfully any mechanic .xvithoutfilskill. and experience in .tlieuiartl of setting saws. n11- '.otherQobje ct.istto nrovidei a simple gage associated with the setting tool, lftojiinsure' r proportion to its width,

lower edge is formed with a plurality of accuracy v resuilt.throughout the .entire length; of tliessaw, without Idamage to 1 its .teeth. I I p dVith these and othereobjects in view, typizcal- -embod iments of the invention willbe i hereinafter. described, dvltll the understand- ;ingthata the 'ferm proportion, and. arr.angement of theeseveralyparts inaylbevar ed, withini the limits 19f ithe claims "hereto ap- .pended, without ldepaiftiingf fnom. the sp rit ofthe. invention ias -seti fo in ai el m ,fieferringtontheaccompanying drawings.

Fig. 1 is anrendielevatiqn ienlarged showring the relationiof the tooLto theis-awte eth; Fig. 2 is a similar -;-5?ieW.,-0f;, awg-tooluhav ng 5 a preferred:formgofpgage associated thereoppositely inclined and alternately disposed teeth 3 and 3. These teeth are bestformed by milling alternately disposed cuts from opposite sides, as shownat 4 and 4 in Fig.' .1.

These cuts intersect each other, so'that they form the series ofalternately offset teeth 3v and 3 whose inner or operative faces,

formed by the bottoms of the milled grooves t and. 4, have the relative positions and angularity which it is desired to impart to the teeth 5 and 5' (Fig. 1) of the saw 6, toproduce'the necessary set.' Thus when the tool is placed upon the edge of the saw, as shown in Fig. 1, and its face 2 is struck with a hammer, the tool teeth 3 Will bend or set alternate saw teeth 5 to one side, and at the same time the tool teeth 3 will set the intervening saw teeth 5 to the other side.

Obviously, the width of the tool teeth 3 and 3 must correspond to the pitch or width the fifythie faces stand} 4' ofjthe tool l correspond-to" the angle ofi'set jHolWever, given .a tool o'fh 'proper to successiy each time st mg the face 2 with a hammer.

small, an'dcan' be so;jeheap1y naldefthatfthejniechanie can easily oarryl-in w teeth .5 1 and .5, and the vrelative hislzit one'for each typeior tyleofsawthat he iuses.

F' It I isildesirableto ;provide iassowith th e, (0001, to insure that eachi appli} cation thereof [will produce. eXaC-tgly the same inount dfset,f.sothatjthe,set .of theisawfxvill beevenlhroughout" its" entire length.

use of such a gage relieves the operator of the .neeess tyof pidg ng accurately, the eiact {strength ,of reaflchhammerv blow, and; lthfereffere 'renders'jthe took more successfuli'in iineizpei'ienc'eclhands.

IIn, orleri.

render. the. tool" still. ,more 7 jcessful in. lthei handscot .inekpert-- users, aiidV .8

ar tate e eysjuat e pane of the saw teeth, s'uc'h'as might resultfrom the use of the gage 7 if toohard a blow were 1 struck, a preferredfform of gage, as shown 1n F1gs.2 and 3 may be used.) This form of gage comprises'a plate 7, Flgl 3, having its ends 10 offset downwardly, as shown,-and

having an elongated,rectangular aperture 8" adapted to fit loosely upon the-toolbody, i

instead of snugly asin the case of the gage 9c 7 describedabove. -The' edges of the bodyv i 1 are provided With notches 11', Fig. 2, and

the length of the aperture '8, in the. gage .7 is such that when'the central portion of said gage is straight, as in Fig. 3, it Will just'fit over the upper portion of the body, but byslightly *bowing said central portion, as

shown in Fig. 2, the effective length of said aperture 8 is reduced, so that the gage is held. in position between the sides of the notches 11. It cannot be removed from the body, except by straightening its central portion, but it can play freely up and down, j I i in said notches. V

In the use of thisform, the body of the tool is held between the thumb and finger of one hand while the hammer blow is; H

struck, the thumb beingin sucha position,- asshown in Fig. 2, that, when the .tool has been driven down the desired amount, the? gage 7 rises and touches the thumb, thus giving the user an indication th t he (16,-

. sired point has been reached. The gageis actuated, as shown, by the engagement of its offset ends with the teeth of the saw, but as said gage only bears lightly and resiliently against the thumb, no injury can i be done to the saw teeth. The notches 11 are long enough to prevent the gage from rising to its upper fixed limit of movement in noravliich may thumb. This can best be made as a circular hole 12 extending through the body 1 in inal use. a

- In order properly to, locate the thumb of the user, so that the gage will always function at the same relative position, the body 1 is provided with some suitable irregularity be felt conveniently by the the proper position. Thus by graspingthe tool with'the thumb centered upon the hole 12, and driving it down upon the saw teeth until the gage 7 is felt to touch the thumb,

- the proper amount of set is produced, and

I by re peating the operationthroughout the" length of the saw without changing the positionof the thumb upon the tool, a very accurate and even set ofthe' entire saw is obtained.

Iclaim: 1. A saw-setting tool comprising a body adapted to be held in the hand and struck with a hammer, said body having upon its lower, edgepa plurality of teeth with oppositely and alternately inclined operative faces, adapted to contact with and set the teeth of a saw, and a gage movably associated with said body and adapted for contact with both the saw teeth and the. hand produced.

2. A saw-setting tool comprising a body adapted to be held in the hand and struck with a hammer, said body having upon its lower edge a plurality of teeth with oppovsitely and alternately inclined operative faces adapted to contact with and set the teeth of a saw, a gage movably associated of the user to indicate the amount of set V with said body and adapted for contact with both the saw teeth and the hand of the user to indicate the amount of set produced, and

means for locating the hand upon said body in position for contactwith said gage.

3. A saw-setting tool comprising a body adapted to be held in the hand and struck with a hammer, said body having upon its.

to be engaged by said shoulders.

In testimony whereof I have signed my name to this specification.

AXEL JOHNSON.

'tive length of said aperture to cause its ends 

